职称英语真题之理工类B级全含答案.docx

1、职称英语真题之理工类B级全含答案2009年职称英语真题之理工类B级（全）含答案第1部分：词汇选项（第115题，每题1分，共15分）下面每个句子中均有1个词或短语划有横线，请为每处划线部分确定1个意义最为接近的选项。1Would you please call my husband as soon as possible?Avisit B phoneCconsult Dinvite2We had a long conversation about her parents. Aspeech Bquestion Ctalk Ddebate3The chairman proposed that we

2、stop the meeting.Astated BannouncedCdemanded Dsuggested4Obviously these people can be relied on in a crisis.Alived on Bdepended onCbelieved in Djoined in5There is always excitement at the Olympic Games when an athlete breaks a record. Abeats Bmaintains Cmatches Dtries6All the pupils seem to be very

3、cheerful. Ahappy Bhealthy Cnaughty Dbusy7The traditional paintings are exhibited on the second floor. Alaid Bdisplayed Ckept Dstored8She stood there, shaking with fury. Amisery Blaughter Canger Dcry9Mary evidently is the most diligent student among us Aintelligent Bbeautiful Ctalkative Dhardworking1

4、0 Persistent attempts to interview Garbo were fruitless.AForceful BReasonableCContinuous D Firm11 Why cant you stop your eternal complaining? Aeverlasting Blong Ctemporary Dboring12 Hundreds of buildings were wrecked by the earthquake. Ashaken Bdamaged Cfallen Djumped13 These paintings are considere

5、d by many to be authentic. Afaithful Broyal Cgenuine Dsincere14 Many economists have given in to the fatal lure of mathematics.Aattraction BsimplicityCpower Drigor15 Ten years after the event, her death still remains a puzzle Amist Bfog Cmystery Dsecret第2部分：阅读判断(第1622题，每题1分，共7分)下面的短文后列出了7个句子，请根据短文的内

6、容对每个句子做出判断：如果该句提供的是正确信息，请选择A;如果该句提供的是错误信息，请选择B;如果该句的信息文中没有提及，请选择C。Radiocarbon DatingNowadays scientists can answer many questions about the past through a technique called radiocarbon (放射性碳), or carbon-14, dating. One key to understanding how and by something happened is to discover when it happened

7、.Radiocarbon dating was developed in the late 1940s by physicist Willard F. Libby at he University of Chicago. An atom of ordinary carbon, called carbon-12, has six protons(中子) and six neutrons (质子) in its nucleus. Carbon-14, or C-14, is a radioactive, unstable form of carbon that has two extra neut

8、rons (原子核). It returns to a more stable form of carbon through a process called decay (衰减). This process involves the loss of he extra neutrons and energy from the nucleus.In Libbys radiocarbon dating technique, the weak radioactive emissions (放射) from his decay process are counted by instruments su

9、ch as a radiation detector and counter. he decay rate is used to determine the proportion of C-14 atoms in the sample being dated.Carbon-14 is produced in the Earths atmosphere when nitrogen (氮)-14, or N-14,interacts with cosmic rays (宇宙射线). Scientists believe since the Earth was formed, the mount o

10、f nitrogen in the atmosphere has remained constant. Consequently, C-14 formation is thought to occur at a constant rate. Now the ratio of C-14 to other carbon toms in the atmosphere is known. Most scientists agree that this ratio is useful for dating items back to at least 50,000 years.All life on E

11、arth is made of organic molecules (分子) that contain carbon atoms coming from the atmosphere. So all living things have about the same ratio of C-14atoms to other carbon atoms in their tissues (组织). Once an organism (有机体) dies it tops taking in carbon in any form, and the C-14 already present begins

12、to decay. Over time the amount of C-14 in the material decreases, and the ratio of C-14 to other carbon toms goes down. In terms of radiocarbon dating, the fewer C-14 atoms in a sample, the older that sample is.16Nowadays many scientists depend on radiocarbon for dating age-old objectsA Right BWrong

13、 C Not mentioned17The radiocarbon dating technique is only about 40 years oldA Right BWrong C Not mentioned18An atom of ordinary carbon has six protons and eight neutronsA Right BWrong C Not mentioned19Radar is used to determine the characteristics of radiocarbonA Right BWrong C Not mentioned20Radio

14、carbon is reliable in dating an object back to at least 50,000 years.A Right BWrong C Not mentioned21The C-14 in an organism begins to decay when it diesA Right BWrong C Not mentioned22The half-life of C-14 is about 25,000 years.A Right BWrong C Not mentioned第3部分：概括大意与完成句子(第2330题，每题1分，共8分)下面的短文后有2项测

15、试任务：(1)第2326题要求从所给的6个选项中为第14段每段1选择个最佳标题;(2)第2730题要求从所给的6个选项中为每个句子确定1个最佳选项。Chimpanzees1Chimpanzees (黑猩猩) will soon be extinct (灭绝). If the present rate of hunting and habitat (栖息地) destruction continues, then within 20 years, there will be no chimpanzees living in the wild. But this is more than an e

16、nvironmental or moral tragedy (悲剧). Chimpanzee extinction may also have profound implications (含意) for the survival of their distant relatives - human beings.2In 1975 the biologist Marie-Claire King and Allan Wilson discovered that the human and chimpanzee genomes (基因组) match by over 98%. Compare th

17、is to the mouse, used as model for human disease in lab tests, which shares only 60% of its DNA with us. In fact, chimpanzees are far more similar to humans than they are to any other species of monkey. As well as resembling us genetically, chimps are highly intelligent and able to use tools. These

18、facts alone should be enough to make protection of chimps an urgent priority (优先). But there is another, more selfish reason to preserve the chimp.3The chimpanzees trump card (王牌) comes in the field of medical research. Chimpanzees are so similar to humans that veterinarians (兽医) often refer to huma

19、n medical textbooks when treating them. Yet chimpanzees do show differences in several key areas. In particular, chimps are much more resistant to a number of major diseases. It is this ability that is so interesting.4For example, chimps seem to show a much higher resistance than humans to HIV, the

20、virus that causes AIDS. Indeed, their use as experimental animals in AIDS research has declined because they are so resistant.5By sequencing the chimp genome and pinpointing (找到) the place where the chimpanzee DNA sequence differs from that of humans, scientists hope to be able to discover which par

21、t of the genetic code gives chimps their increased resistance to some diseases. This, they hope, will allow them to develop new and more effective treatments for the human forms of these diseases. Such treatments could include the production of new drugs or even the alteration (改变) of the human gene

22、tic sequence. The recently completed human genome sequencing project has shown that such an effort is now well within our reach.23Paragraph 124Paragraph 225Paragraph 326Paragraph 4AReasons for HIV resistanceBImplications of chimpanzee extinction for humansCEffective AIDS treatmentDGenetic similariti

23、es between chimps and humansEChimps resistance to HIVFGenetic differences between chimps and humans27Chimpanzee extinction may affect28There is a difference ofless than 2% between the chimp and29Scientists suspect that genes.PlaY a significant role in protecting chimps from getting30The discovery of

24、 the genetic code of chimps will be helpful toAsome human disease treatmentsBsome diseasesChuman survivalDhuman genomesEkey areasFhealthier lifestyle第4部分：阅读理解(第3145题，每题3分，共45分)下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。第一篇WaterThe second most important constituent (构成成份) of the biosphere (生物圈) is liquid

25、water. This can only exist in a very narrow range of temperatures, since water freezes at 0 and boils at 100. Life as we know it would only be possible on the surface of a planet which had temperatures somewhere within this narrow range.The earths supply of water probably remains fairly constant in

26、quantity. The total quantity of water is not known very accurately, but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers. Most of it is in the form of the salt water of the oceans - about 97 per cent. The restis fresh, but three-quarters of th

27、is is in the form of ice at the Poles and on mountains, and cannot be used by living systems until melted. Of the remaining fractional which is somewhat less than one per cent of the whole, there is 10-20 times as much stored underground water as there is actually on the surface. There is also a tin

28、y, but extremely important fraction of the water supply which is present as water vapor in the atmosphere.Water vapor in the atmosphere is the channel through which the whole watercirculation (循环) of the biosphere has to pass. Water evaporated (蒸发) from the surface of the oceans, from lakes and rive

29、rs and from moist (潮湿的) earth is added to it. From it the water comes out again as rain or snow, falling on either the sea or the land. There is, as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land, but there is more rainfall over the land than

30、 over the oceans, and the balance is restored by the runoff from the land in the form of rivers.31Liquid water only existsAin the center of the earth.Bon the surface of our planet.Cin a very narrow range of temperatures.Din the coastal areas of the earth.32The total quantity of water on EarthAremains almost unchanged.Bhas greatly increased in recent years.Cis decreasing constantly.Dis affected by global warming.33Most of the fresh water on EarthAis stored underground.Bis in the form of ice at the Pol